54535021 has 4 divisors (see below), whose sum is σ = 54752544. Its totient is φ = 54317500.

The previous prime is 54535007. The next prime is 54535027. The reversal of 54535021 is 12053545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54535021 - 2²³ = 46146413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54535027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108385 + ... + 108886.

It is an arithmetic number, because the mean of its divisors is an integer number (13688136).

Almost surely, 2^54535021 is an apocalyptic number.

It is an amenable number.

54535021 is a deficient number, since it is larger than the sum of its proper divisors (217523).

54535021 is a wasteful number, since it uses less digits than its factorization.

54535021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217522.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 54535021 is about 7384.7830706122. The cubic root of 54535021 is about 379.2205189756.

Adding to 54535021 its reverse (12053545), we get a palindrome (66588566).

The spelling of 54535021 in words is "fifty-four million, five hundred thirty-five thousand, twenty-one".